Electronic cigarette



FIG. 1 is a perspective view of an electronic cigarette;

FIG. 2 is a front view of the electronic cigarette;

FIG. 3 is a rear view of the electronic cigarette;

FIG. 4 is a left side view of the electronic cigarette;

FIG. 5 is a right side view of the electronic cigarette;

FIG. 6 is a top view of the electronic cigarette; and,

FIG. 7 is a bottom view of the electronic cigarette.

The broken lines in the drawings depict portions of the electronic cigarette that form no part of the claimed design. 

CLAIM The ornamental design for an electronic cigarette, as shown and described. 